<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >ibase_set_event_handler</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="Manual do PHP" HREF="index.html"><LINK REL="UP" TITLE="Firebird/InterBase" HREF="ref.ibase.html"><LINK REL="PREVIOUS" TITLE="ibase_service_detach" HREF="function.ibase-service-detach.html"><LINK REL="NEXT" TITLE="ibase_timefmt" HREF="function.ibase-timefmt.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Manual do PHP</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.ibase-service-detach.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.ibase-timefmt.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.ibase-set-event-handler" ></A >ibase_set_event_handler</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN53378" ></A ><P > (PHP 5)</P >ibase_set_event_handler -- Registra uma função de callback para ser chamada quando eventos são postados </DIV ><DIV CLASS="refsect1" ><A NAME="AEN53381" ></A ><H2 >Descrição</H2 >resource <B CLASS="methodname" >ibase_set_event_handler</B > ( callback event_handler, string event_name1 [, string event_name2 [, string ...]] )<BR ></BR >resource <B CLASS="methodname" >ibase_set_event_handler</B > ( resource connection, callback event_handler, string event_name1 [, string event_name2 [, string ...]] )<BR ></BR ><P > Esta função registra uma função do usuário como gerenciador de eventos para os eventos especificados. O callback é chamado com o nome do evento e a conexão como argumento quando qualquer um dos eventos especificados e postado pelo banco de dados. O callback deve retornar <TT CLASS="constant" ><B >FALSE</B ></TT > se o gerenciador de eventos deve ser cancelado. Qualquer outro valor retornado é ignorado. </P ><P > <DIV CLASS="informalexample" ><P ></P ><A NAME="AEN53419" ></A ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /></font><font color="#007700">function </font><font color="#0000BB">event_handler</font><font color="#007700">(</font><font color="#0000BB">$event_name</font><font color="#007700">, </font><font color="#0000BB">$link</font><font color="#007700">)<br />{<br /> if (</font><font color="#0000BB">$event_name</font><font color="#007700">==</font><font color="#DD0000">"NEW ORDER"</font><font color="#007700">) {<br /> </font><font color="#FF8000">// process new order<br /> </font><font color="#0000BB">ibase_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#DD0000">"UPDATE orders SET status='handled'"</font><font color="#007700">);<br /> } else if (</font><font color="#0000BB">$event_name</font><font color="#007700">==</font><font color="#DD0000">"DB_SHUTDOWN"</font><font color="#007700">) {<br /> </font><font color="#FF8000">// free event handler<br /> </font><font color="#007700">return </font><font color="#0000BB">false</font><font color="#007700">;<br /> }<br />}<br /></font><font color="#0000BB">ibase_set_event_handler</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">,</font><font color="#DD0000">"event_handler"</font><font color="#007700">,</font><font color="#DD0000">"NEW_ORDER"</font><font color="#007700">,</font><font color="#DD0000">"DB_SHUTDOWN"</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P ></P ></DIV > </P ><P > O valor de retorno é um recurso event. Este recurso pode ser utilizado para liberar o gerenciador de evento usando <A HREF="function.ibase-free-event-handler.html" ><B CLASS="function" >ibase_free_event_handler()</B ></A >. </P ><P > Veja também <A HREF="function.ibase-free-event-handler.html" ><B CLASS="function" >ibase_free_event_handler()</B ></A > e <A HREF="function.ibase-wait-event.html" ><B CLASS="function" >ibase_wait_event()</B ></A >. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.ibase-service-detach.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Principal</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.ibase-timefmt.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ibase_service_detach</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.ibase.html" ACCESSKEY="U" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >ibase_timefmt</TD ></TR ></TABLE ></DIV ></BODY ></HTML >